Load-Dependent Rotating Performance of Motorized Spindles: Measurement and Evaluation Using Multi-Zones Error Map

Chen, Weizheng; Yang, Zhaojun; Chen, Chuanhai; Luo, Wei

doi:10.1109/access.2019.2957599

Cited by 6 publications

(3 citation statements)

References 30 publications

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“…. Additional loads caused by different misalignment conditions result in different deformations of the shaft as the loads will finally act on the end of the rotating spindle through the coupling, and the corresponding axis orbit is different, which concerns the mechanical performance of the spindle [36]. erefore, experiments are carried out to study the influence of misalignment on the spindle axis orbit, which provides the basis for timely detection and adjustment of misalignment and ensures the safe high-speed operation and accurate performance test of the reliability test.…”

Section: Experiments and Discussionmentioning

confidence: 99%

Reliability Test Rig of the Motorized Spindle and Improvements on Its Ability for High‐Speed and Long‐Term Tests

Yang

Chen

Luo

et al. 2021

Shock and Vibration

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To realize the accurate performance test under high-speed operation and the long-term stable reliability test of the motorized spindle, a reliability test rig (RTR) which can simulate the cutting force in the actual machining process is presented. Firstly, a reasonable prototype integrating dynamic force loading devices and torque loading devices is designed and established based on the load analysis of the spindle, and a complete and explicit control strategy of the reliability loading test is designed. Secondly, the effects of misalignment of the diaphragm coupling caused by assembling are analyzed, and experiments are conducted to test the axis orbit of the motorized spindle. The experimental results illustrate that the axis orbit can identify the occurrence of misalignment, which ensures timely adjustment of misalignment and the accurate performance test under high-speed operation. Lastly, a damper is added in the mechanical structure of the electrohydraulic servo loading system (EHSLS), and the comparison of Bode maps before and after optimization is analyzed by the Nyquist criterion. After the optimization, the gain and phase margin of the Bode diagram are 12.9 dB and 57.2°, respectively, which are both within the stable range and validate the improvements on the ability of long-term reliability tests of the motorized spindle. The presented RTR is able to simulate the actual cutting force and provides an efficient loading approach to guarantee the accuracy and stability of motorized spindle tests.

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Section: Experiments and Discussionmentioning

confidence: 99%

Reliability Test Rig of the Motorized Spindle and Improvements on Its Ability for High‐Speed and Long‐Term Tests

Yang

Chen

Luo

et al. 2021

Shock and Vibration

Self Cite

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“…The accelerated life test device must be able to load the grating ruler according to the stress type in the actual working condition, and can monitor the relevant parameters in real time [33]. The accelerated life test device includes a servo driving platform and a temperature and humidity test chamber.…”

Section: Accelerated Life Test Systemmentioning

confidence: 99%

Accelerated life reliability evaluation of grating ruler for CNC machine tools based on competing risk model and incomplete data

Yang

et al. 2021

Int J Adv Manuf Technol

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Grating ruler is the high-precision linear displacement sensor used in the servo control system of CNC machine tools. It is one of the key components affecting the machining accuracy of CNC machine tools. Due to the long life-time of grating ruler, and it will cost a lot of time and resources to evaluate its reliability level by traditional life test. At the same time, there are some incomplete data in the failure data, which will cause inaccurate evaluation results. In this paper, an accelerated life reliability evaluation method of grating ruler based on competing risk model and incomplete data is proposed. Firstly, according to the characteristics of grating ruler, the life distribution model based on competitive risk is established, and the representation method and conversion method of failure data considering incomplete data are proposed.Secondly, the accelerated life test system which can apply temperature and humidity accelerated stress is built, and the reliability level of JFT series closed absolute grating ruler is evaluated by the proposed method. Finally, the proposed method is compared with the single life distribution model to verify the effectiveness.

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“…Ding proposed an improved sliding mode dynamic matrix control strategy to ensure the force tracking performance and improve workload simulation accuracy [16]. Chen proposed a load-dependent precision evaluation method based on a workload simulation platform, which ensures the measurement accuracy under the spindle reliability test [17]. However, the loading mode adopted by the above test system does not consider the rotational character of radial cutting force but directly removes the rotational character, which alters the actual loading frequency and makes the reliability result incorrect.…”

Section: Introductionmentioning

confidence: 99%

General Cutting Load Model for Workload Simulation in Spindle Reliability Test

et al. 2022

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As the key functional component of the machine tool, the reliability test of the spindle is necessary to verify the reliability of the machine tool. In the reliability test, the cutting load model is the guideline of workload simulation and is the prerequisite to ensure the accuracy and effectiveness of the long-term experiment. However, the existing load models usually aim at the specific cutting force at the tool-tip, thereby ignoring the versatility, maneuverability, and accuracy of the load model when applied in the spindle reliability test. In this study, a general cutting load model for the machine tool spindle is established in a form of radial-axial-torque decomposition, and the radial force is simplified as non-rotating status for the maneuverability of conducting a load simulation. The difference between rotating and non-rotating radial force on the reliability calculation is also discussed and corrected using bearing fatigue analysis. A spindle reliability test platform with radial force, axial force, and torque simulation is developed according to the cutting load model, while the loading spectrum is compiled for conducting the spindle reliability test. This research is of great engineering value for the designing of the spindle reliability test.

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Load-Dependent Rotating Performance of Motorized Spindles: Measurement and Evaluation Using Multi-Zones Error Map

Cited by 6 publications

References 30 publications

Reliability Test Rig of the Motorized Spindle and Improvements on Its Ability for High‐Speed and Long‐Term Tests

Reliability Test Rig of the Motorized Spindle and Improvements on Its Ability for High‐Speed and Long‐Term Tests

Accelerated life reliability evaluation of grating ruler for CNC machine tools based on competing risk model and incomplete data

General Cutting Load Model for Workload Simulation in Spindle Reliability Test

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